feat: support folder index pages

apps/server/internal/httpserver/handlers_test.go

@@ -0,0 +1,43 @@
+package httpserver
+
+import (
+	"testing"
+	"time"
+
+	"github.com/tim/md-hub-secure/apps/server/internal/docs"
+)
+
+func TestBuildBrowserUsesFolderIndex(t *testing.T) {
+	browser := buildBrowser([]docs.DocumentRecord{
+		{
+			Path:      "guide/index.md",
+			Title:     "Guide",
+			UpdatedAt: time.Now(),
+		},
+		{
+			Path:      "guide/setup.md",
+			Title:     "Setup",
+			UpdatedAt: time.Now(),
+		},
+	}, "guide/index.md")
+
+	if len(browser.Columns) != 2 {
+		t.Fatalf("len(browser.Columns) = %d, want 2", len(browser.Columns))
+	}
+
+	root := browser.Columns[0].Items
+	if len(root) != 1 {
+		t.Fatalf("len(root items) = %d, want 1", len(root))
+	}
+	if !root[0].IsFolder || root[0].Name != "Guide" || root[0].URL != "/docs/guide" {
+		t.Fatalf("root folder = %#v, want Guide folder linking to /docs/guide", root[0])
+	}
+
+	child := browser.Columns[1].Items
+	if len(child) != 1 {
+		t.Fatalf("len(child items) = %d, want 1", len(child))
+	}
+	if child[0].Path == "guide/index.md" {
+		t.Fatalf("folder index file should be represented by the folder, not repeated as a child file")
+	}
+}